Initialize CRIWVWebView with Configuration object instead of browserState.

ios/web_view/internal/criwv_website_data_store_internal.h

Index: ios/web_view/internal/criwv_website_data_store_internal.h
diff --git a/ios/web_view/internal/criwv_website_data_store_internal.h b/ios/web_view/internal/criwv_website_data_store_internal.h
new file mode 100644
index 0000000000000000000000000000000000000000..045b514a2f9caf931e6cc7f4ae41302ebda37860
--- /dev/null
+++ b/ios/web_view/internal/criwv_website_data_store_internal.h
@@ -0,0 +1,22 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_WEB_VIEW_INTERNAL_CRIWV_WEBSITE_DATA_STORE_INTERNAL_H_
+#define IOS_WEB_VIEW_INTERNAL_CRIWV_WEBSITE_DATA_STORE_INTERNAL_H_
+
+#import "ios/web_view/public/criwv_website_data_store.h"
+
+namespace ios_web_view {
+class CRIWVBrowserState;
+}  // namespace ios_web_view
+
+@interface CRIWVWebsiteDataStore ()
+
+// The browser state associated with this website data store.
+@property(nonatomic, readonly, nonnull)
+    ios_web_view::CRIWVBrowserState* browserState;
+
+@end
+
+#endif  // IOS_WEB_VIEW_INTERNAL_CRIWV_WEBSITE_DATA_STORE_INTERNAL_H_